emerge: there are no ebuilds to satisfy ">=app-arch/qca-2.1.0[qt5]".
(dependency required by "net-im/kadu-encryption_otr-3.0::roslin" [ebuild])
(dependency required by "=net-im/kadu-encryption_otr-3.0" [argument])

emerge: there are no ebuilds built with USE flags to satisfy "app-crypt/qca:2[openssl]".
!!! One of the following packages is required to complete your request:
- app-crypt/qca-2.1.1::gentoo (Missing IUSE: openssl)
(dependency required by "net-im/kadu-jabber_protocol-1.5::roslin" [installed])
(dependency required by "net-im/kadu-1.5::roslin[jabber]" [installed])
(dependency required by "@selected" [set])
(dependency required by "@world" [argument])